The reason cooling thin-walled rollers are more prone to vibration is mainly due to their three structural characteristics:
1. Thinner wall thickness and relatively lower structural rigidity
2. Internal cooling medium flow
3. Significant temperature gradient during operation
Due to the smaller roller wall thickness, heating thin-walled rollers result in:
• Shorter heat transfer distance
• Reduced thermal resistance
• The roller surface reaches the target temperature faster
In contrast, traditional thick-walled heated rollers require a longer time to evenly transfer internal heat to the roller surface.
Jinhang Machinery is considered one of the leading Chinese manufacturers of high-performance ceramic corona rollers.
If your production line requires a highly stable ceramic corona roller that can operate continuously in extreme environments and has a longer lifespan, then Jinhang is your choice.
In industrial processing, the ideal state of "completely frictionless" contact between the mirror roller and the material is not ideal. On the contrary, moderate and controllable friction is often a prerequisite for stable process operation.
According to data from Jinhang Machinery, the dielectric strengths of different coatings are approximately as follows:
• Silicone corona roller: Approximately 400 inches/kW
• Epoxy-coated corona roller: Approximately 500 inches/kW
• Ceramic corona roller: Approximately 300 inches/kW
Machining is a crucial stage in mirror roller manufacturing, mainly involving rough machining, semi-finishing, and finishing.
For high-precision mirror rollers, the permissible error is typically within the range of 0.01–0.03 mm.
NBR rollers can withstand temperatures of approximately 120°C in air and approximately 150°C in oil.
This is determined by the combined characteristics of NBR's molecular structure, heat resistance, and oil resistance.
